Adjustable lamp bracket



R. G. ARCHER, Sm, AND R. G. ARCHER, JR. ADJUSTABLE LAMP BRACKET.

APPLICATION FILED DEC. 28. 1921.

1,438,806. Patented Dec. 12, 1922.

A 2 SHEETSSHEE1 l.

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ATTORNEY R. e. ARCHER, sR., AND R. e.ARcHl-:'R, 1R.

ADJUSTABLE LAMP BRACKET.-

APPLICATION FILED DEC. 2a. 1921.

Patented Dec. 12, 1922.

2 SHEETS-$11521 2.

' m ENTORS' cflrcer r.

Zara fake! A TTORNE Y Patented Dec. l2, i922.

nonnn'r e. ARCHER, sit, ANDBOBERT e. ARCHER, an, or none: wesnrneron',

- PENNSYLVANIA.

enaus'rnetn LAMP eanoirnr.

Application filed December 23. 1921; Serial No. 525,451.

To alteoiwm it may concern:

Be 1t known that we, Bonner G. ARC ER,

Six, and ROBERT G. ARCHER, Jr.,citizens of object to provide in such a device a unique construction that Wlll give to the bracket an extra large range of adjustment.

Another object of our invention is to produce a ball and socket joint of peculiar and unique construction.

A further object of the invention is to provide a clamp for such a device that may be readily adjusted to fit objects of different sizes to which the bracket is to be attached.

A still further object of the invention is to construct a bracket of the class stated consisting of a body having clamp members of jaws connected therewith, one of which is operable by means of a cam, a ported by saidbody, socket elements coopcrating with said ball, a separator connected with said socket elements and having means to adjust the tension of the latter, another ball carried by portions of the socket elemerits, a socket hook holder and socket hook coacting with the last named ball, said holder having means to vary the tension of the socket hook, and means on the body and the socket hook holder for supporting the conductor wires leading to a lamp sup ported in'the socket hook.

With these ends in .view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims. I

In order that those skilled in the. art to which this invention appe'rtains, may understand how to make and use the same, we will describe its construction in detail, re-

ferring by numerals to the accompanying drawin s forming a part of this application. in which Fig. 1, is a plan view of an adjustable ball sup- I pairs and lamp bracket made in accordance with our invention. Fig.2, is a side elevation thereof showing a lamp socket bulb attached thereto.

F g. 3., is a side elevation of the separator. Fig. 4, is an'edge view thereof. Fig.5, is a side elevation of the socket hook holder. 7

Fig. 6, is an edge View thereof. Fig. 6 is an end view of the same. Fig. 7, is an edgeview of one of the rub ber caps.

' Fig. 8, is a face view thereof.

F ig. 9, is a side elevation of the cam for actuatingone of the jaws. 1

Fig. 10, is an edge view thereof.

n1g. 1l, 1s a side elevationof the upper clamp aw.

Fig. 12, is a lower face view thereof.

" Fig. 13, 1s a plan view of the lower clamp,

jaw. I

F '14, is a side elevation thereof. Fig. 15, 1s a side elevation ofthe body.

Fig. 16,.is a section at the line 16-16 of i Fig. 15. I j i F ig. 17, is a lower end view thereof. I

In carrying outour invention as here embodied, 2 represents the body includinga leg 3 T-shaped in cross section, as plainly shown in Fig. 16,- and an integral outwardly projecting-head 4 having a recess 5 at its outer end from which projects the trunnion 6 and on this trunnion is ournalled the cam 7 by means of the hole 8, said cam having a handle 9 whereby the same may be readily rotated. The trunnion 6 has a slot 10 therein for the reception of one of the ball supporting members ll flthe other or coacting one of said members lying between the pair of coaoting lugs 12 formed on the other side of the head 4 directly opposite the aforementioned trunniom'and portions of'thcse ball supporting members underlie the lugs 13 and 14- which are arranged in head. A bolt passes through the trunnion and has a nut threaded on its opposite end and the head of said screw engages the other to assist in holding said members in place, while another bolt 15' passes through the head in the region of the lugs 15 and has a nut 16? threaded thereon, said bolt nut engaging the saidv ball supporting members project from opposite faces of the I the lugs 15 act as while the other ends are at another point to further assist in holding the ball supporting members in place, while stopsto prevent the nut bolt being drawn too tightly against the arts.

A; ball 16 is carried by the ball supportingmembers l1 and as said ball supporting members are preferably of wire they are preferably inserted in holes in the ball and afterwards fastened in any suitable or well known rnanner. v

With the upper edgeof the head 4: are formed the pair aperture 18 with a restricted mouth 19 whereby a conductor wire maybe readily inserted and will-be prevented from accidental withdrawal under ordinary "conditions. j

About the ends of the ball supporting members 11- are coiled the springs 20, the

upper ends of which are fastened to the screw passing through the trunnion or other suitable part as the stationary element fastened to the upper jaw 21in any suitable and well known manner. The said upper jaw has an up right portion 22 in which are formed the vertical grooves 23 for registration with the ends of the ball supporting members 11 having the springs coiled thereonwhereby the upper aw will be guidedduringiits the cam 7 or thecounter movements caused by the action of the movements caused by springs.

On the leg 3 is :slidably mounted the lower jaw 2 which has undercut or beveled notches 25 for registration with the. flanges of the 'T shaped leg so that when pressure is brought to bear tilted so as tofirmly grip the 'flanges of the leg and be prevented from slipping. Both the upper and lower as at 26 so as to form a tenon for coaction with the dove tailed groove in the rubber caps 27 which are mounted on the aws to' prevent the latter mar-ring the object to In fastened.

which the lamp bracket, is order'to prevent thelower aw becoming disengaged from the leg of the body a pin 28 or its equivalent is fixed to the lower end of the leg after the .lower jaw hasbeen placed thereon. j a

The reference numeral 29 denotes the reach consisting of a separator 30, the reach arms 31 and the ball 32; The separator is preferably in the form of a casting having a projection 31 at one'enrh one edge of which is concavea-s at 32- eq'uivalent fastening devicesqrabove and below the projection 51 and slightly to the rearthereof on each, side of the separator are formed shoulders 34 and, at theother end adjacent and projecting r ofthe lugs 35 and are held in of horns 17 producing an to receive a upon the aw itwill be jaws are beveled with a threadscrewsisl or.

opposite longitudinal edges from each face are formed 31 each have a loop 37 with a tail 38 projecting therefrom parallel with the arm proper and these arms of which there aretwo are mounted upon the separator with the arm proper on one side thereof and the tail on the opposite side and these parts rest upon the shoulders 3 L and-engage the inner walls place by the screws 3e and other screws threaded into, the holes 36. The loops 37 project beyond the end of the separator andforrn a socket for the ball 16 mounted therebetween and by regulating the screws 3d, the tension of the loops upon the ball 16 may be varied as willhe obvious. Y The ball 32 is fastened to the outer ends of suitable or well known manner.

The socket hook holder 39 is provided at one end with an arcuate lug 40 forming a portion'of a socket and this lug is preferably wedge shaped lengthwise, asshown I in Fig. 1. The inner surface of said lug is referabl conoaved to receive'the ball 32 and below said lug are formed the, ears ll producing channels in which rest the parallel shankportionsi li of the sockethook having at one end theloop is; for c0- action with the arcuate lug 410- to produces socket for the ball 32, while at the other end is formed the hook or springcl'amp L3 suitable lamp socket 4-5 inwhich a lamp a6 is adapted to be inserted. The parallel shank portions of the socket hook are situated on opposite sides of the socket 100k holder and at one end lie between lugs a9 and are held in placeby a screw 4r! passing through a hole. in the holder and having a nut d8 thereon, said nut engaging one of the shanks while the head of the screw engages the other and in order to prevent said screw nut being drawn too tightly against the socket hook, lugs 49 are formed the reach arms in any v llO other end a screw 50 is insertedibetween the shank portions of the socket hook and threaded into the holder. and by regulating said screw the tension of the loop on the ball 82 may be varied. Inthe body ofv the holder isformed a notch or ape'rt ureol hav- 1 ing a restricted mouth 52 formed by the horns 53 whereby a conductor wire may be inserted and will not become accidentally displaced. a j

By construetinga lamp bracketthis way the light may be adjusted to numerous different positions accordlng tocondrtions and desires of theuser, it being practically. possible to obtain an almost universal a-djustnient the use of the two balls and their coacting sockets.

messes In use the lower jaw 24 of the clamp is adapted to be positioned vertically upon a leg 8 so that it will be spaced from the upper jaw 21 a distance approximating the thickness of the objectlto which the device is to be attached and then by actuating the cam 7 the said upper jaw will be moved a sufficient distanceto securely clamp the device in place and during this action the lower jaw will be slightly tilted so as to firmly grip the flanges of the leg 3 and thus prevent said lower jaw from slipping from its adjusted position until the upper jaw is released. After the lamp bracket is clamped in place the parts may be readily adjusted by swinging the reach about the ball 16 and the socket hook holder and its component parts about the ball 32.

f course we do not wish to be limited to the exact details of construction as herein shown as these may be varied within the limits of the appended claims without departing from the spirit of our invention.

Having thus fully described our invention, what we claim as new and useful, is

1. An adjustable lamp bracket consisting of a body, clamping jaws carried thereby, ball supporting members carried by said body, a ball attached to said members, a separator, reach arms adjustably attached to said separator and having loops to engage said ball, another ball carried by the outer ends of said reach arms and a socket hook holder, a portion of which forms a part of a socket for coaction with the last named ball, and a socket hook adjustably connected with said holder and having a loop at one end for coaction with the last named ball to complete the socket therefor.

2. An adjustable lamp bracket including a body comprising a leg T-shaped in cross section and a head, the latter having a recess in one face at its outer end and provided with a notch having a restricted mouth at its outer end, a trunnion formed integral with the head in the region of the recess and having a notch in its outer end, a pair of lugs projecting from said head opposite the trunnion, other lugs formed with said head and projecting from opposite faces thereof, a ball supporting member on each side of said head underlying certain of said lugs with a portion of one of said members lying in the notch in the trunnion and a portion of the other supporting member lying between the lugs on the opposite side thereof, a cam rotatably mounted on said trunnion, means passing through the head in the region of the trunnion to hold the ball supporting means in place (other means mounted on the head and engaging portions of the ball supporting means and also certain of said lugs), an upper jaw having a shank with grooves for registration with portions of said ball supporting means and adapted to be moved in one direction by the cam, means to normally force said jaw in the opposite direction, a 'lower jaw slidably mounted on the leg, means fixed to said leg to prevent the accidental displacement of said lower jaw, resilient-caps on said jaws, a ball fastened to the ball supporting means, a reach coacting with said ball, said reach including another ball, a socket hook holder and a socket hook adjustably attached to the holder, said holder and hook forming a iocket to cooperate with the last named ba 3. An adjustable lamp bracket including a body comprising a leg T-shaped in cross section and a head, the latter having a recess in one face at its outer end and provided with a notch having a restricted mouth at its outer end, a trunnion formed integral with the head in the region of the recess and having a notch in its outer end, a pair of lugs projecting from said head opposite the trunnion, other lugs formed with said head and projecting from opposite faces thereof, a ball supporting member on each side of said head underlying certain of said lugs with a portion of one of said members lying in the notch in the trunnion and a portion of the other supporting member lying between the lugs on the opposite side thereof, a cam rotatably mounted on said trunnion, means passing through the head in the region of the trunnion to hold the ball supporting means in place, other means mounted on the head and engaging portions of the ball supporting means and also certain of said lugs, an upper jaw having a shank with grooves for registration with portions of said ball supporting means and adapted to be moved in one direction by the cam, means to normally force said jaw in the opposite direction, a lower jaw slidably mounted on the leg, means fixed to said leg to prevent the accidental displacement of said lower jaw, resilient caps on said jaws, a ball fastened to the ball supporting means, a reach consisting of a separator, a pair of reach arms each having a loop and tail formed therewith, said loops forming a socket for the ball, means to regulate the tension of the loops on said ball, another ball carried by the outer end of said reach arms, a socket hook holder provided with an arcuate lug forming a part of a socket for coaction with the last named ball, a socket hook having a loop formed therefrom for coaction with the last named ball to form the other part of the socket, and means to vary the tension of the loop on said last named ball.

4. In a device of the character stated, a body having clamping elements, a ball supported by said body, a reach consisting of a separator and a pair of reach arms, said arms each having a loop formed at one end and coacting to produce a socket for said .& 1 338,806

ball, means to vary the tension of said loops for the last named ball, and means to vary on said ball, anotherballcarried by the the tension of said loop on said last named 10 opposite ends ofthe reach arms, a socket balk hook holder having a portion of a socket In testimony whereof, We have hereunto formed therefrom, a socket hook carried by affixed our signatures:

said holder, said socket hook having a 100pv I formed therewith for coaotion with the ROBERT G. ARCHER, SR. aforementionedsocket part to "form a socket ROBERT G. ARCHER, JR. 

